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Deliverability Letter

Safelist

Also known as: Whitelist, Safe Sender List

A safelist is a list of email addresses or domains that a person marks as trusted so their emails skip spam filters and go straight to the inbox. It tells the email provider to treat those messages as safe and deliver them to the main inbox.

Safelisting is what happens when someone tells their email app that your address is safe. Your emails are treated like trusted messages instead of being checked the same way as unknown senders. This helps your messages bypass many of the usual spam filters. It keeps important emails from getting lost in junk folders.

For email marketers and product teams, safelists protect your most important messages. Order confirmations, receipts, account alerts, and key updates are far less likely to be missed. When you are on a safelist, people see your emails where they actually read them. That leads to better engagement and fewer support tickets about missing emails.

You can ask new subscribers or customers to safelist your address in your welcome email or onboarding flow. Keep the request short and clear, and show the exact address they should add. You might say that it helps them receive receipts, updates, or access links without issues. This simple step can make a real difference to your deliverability over time.